The new responsive forms are great, but still has some limitations that older versions of controls had.
When using a lookup control, you can filter the values by searching for values by typing. It has however a 5000 items limit.
This value is hard-coded in the request, but Microsoft has implement paginated requests in their API.

This is a pity to have a search for large lists, but not large enough, please remove the hard-coded limit.

I have some lists that have hyperlink fields where I put links to salesforce and other lists. The New Responsive Form does not support Hyperlink fields and has no hyperlink control. Furthermore, these fields do not appear at all in the designer.

I think this is similar to Hyperlink Control for Repeating Section
https://nintex.uservoice.com/forums/218293-4-nintex-forms-for-office-365/suggestions/38496088-hyperlink-control-for-repeating-section

It would help a lot to have the possibility to see whenever needed who was the person who last modified a Nintex form for O365.
At this moment this detail are not available but the date only.
Knowing the who change it would help us a lot when debugging an issue as we would be able to collaborate with that person and find the needed info.

The ability to redirect a user after closing the form using the buttons on the ribbon (New Responsive Forms Designer).

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Missing the ability to add buttons.

Also ability to customise buttons Save and Continue or Save and Submit -> set connected field on submit and set it’s value to something

Allow users to enter their custom submission successful page.

Add "Create Column" button back to the Forms designer ribbon. For some reason it is gone, without any explanation. It is still listed on the Nintex Forms for Office 365 help page at https://help.nintex.com/en-US/Office365/Forms/ResponsiveClassicForms/VisualReference/Ribbon.htm

Currently, Nintex Form unable to display the historic version of the SharePoint List Item. Nintex Forms can only display the most recent version of the item the user has access too.

When using Nintex Form, the user should be able to get the item historic version and not the most recent one.

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It would help a lot if we could, manually and whenever needed, Print to PDF Multiple Forms ( SP Items in a list) at a time. Could you please add this feature to the existing Print To PDF button in Nintex Forms O365?

It would be good if you could either set the collapse functionality to collapsed by default and or apply a rule in the rules engine to collapse a group automatically.

Like mentioned in this user voice: https://nintex.uservoice.com/forums/218293-4-nintex-forms-for-office-365/suggestions/19051840-improve-form-load-speed-in-o365, the loading speed for new responsive forms is not fast enough.
In the meantime, it would be good to display a loading icon or text like "Form loading, please wait" to not confuse users who want to use the form.

Currently we can only see how many Forms licenses are used in the customer portal. For workflows we can see where they are with Hawkeye. For Forms we are flying blind and have no way of identifying where the license usage is going/coming from or the miss use of Forms Licenses. Currently it's an unconrolable cost with no visibility of where the cost is coming from nor do we know what we need to support unless someone tells the SharePoint Team.

The O365 version of the classic form does not allow you to lookup lists on different sites. This is very restrictive

Currently the People Picker uses the SharePoint user profile service to access people information which may not be accessible for certain organisations.

It would be good to allow the People Picker to query agaainst the AzureAD to return people information.

When I attached more than 10 files, it doesn't fit in the form desgner and the gap occurs.
I have to adjust the height of attachment control to avoid this. I hope it would be improved.

Currently, the New Responsive Form only returns the first list item matched.
Please implement the ability to return multiple results.

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When having Repeating section in List Form and then try to display this repeating section in the Nintex Task Form, the repeating section data is not populated in the Task Form (New Responsive Form)

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When printing a multi-page form to PDF, Nintex needs to support the ability to identify which pages it should output.
For example, the first page contains all the field prompting and the rest is a formatted document that inserts the various fields for printing to PDF.
Nintex should support the output of form pages 2 onwards to be printed to PDF.